JdbcRules.JdbcJoinRule (Apache Calcite API)

java.lang.Object
- org.apache.calcite.plan.RelOptRule
- - org.apache.calcite.rel.convert.ConverterRule
  - - org.apache.calcite.adapter.jdbc.JdbcRules.JdbcConverterRule
    - - org.apache.calcite.adapter.jdbc.JdbcRules.JdbcJoinRule

Enclosing class:: JdbcRules

public static class JdbcRules.JdbcJoinRule
extends JdbcRules.JdbcConverterRule

Rule that converts a join to JDBC.

Field Summary
- Fields inherited from class org.apache.calcite.adapter.jdbc.JdbcRules.JdbcConverterRule
  out
- Fields inherited from class org.apache.calcite.plan.RelOptRule
  description, operands, relBuilderFactory

Constructor Summary

Constructors
Constructor	Description
`JdbcJoinRule(JdbcConvention out)`	Deprecated.
`JdbcJoinRule(JdbcConvention out, RelBuilderFactory relBuilderFactory)`	Creates a JdbcJoinRule.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`private boolean`	`canJoinOnCondition(RexNode node)`	Returns whether a condition is supported by `JdbcRules.JdbcJoin`.
`RelNode`	`convert(Join join, boolean convertInputTraits)`	Converts a `Join` into a `JdbcJoin`.
`RelNode`	`convert(RelNode rel)`	Converts a relational expression to the target trait(s) of this rule.

Methods inherited from class org.apache.calcite.rel.convert.ConverterRule
getInTrait, getOutConvention, getOutTrait, getTraitDef, isGuaranteed, onMatch

Methods inherited from class org.apache.calcite.plan.RelOptRule
any, convert, convert, convertList, convertOperand, convertOperand, equals, equals, getOperand, getOperands, hashCode, matches, none, operand, operand, operand, operand, operand, operandJ, operandJ, some, toString, unordered

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - JdbcJoinRule
```
@Deprecated
public JdbcJoinRule(JdbcConvention out)
```
    Deprecated.
  - JdbcJoinRule
```
public JdbcJoinRule(JdbcConvention out,
                    RelBuilderFactory relBuilderFactory)
```
    Creates a JdbcJoinRule.
- Method Detail
  - convert
```
public RelNode convert(RelNode rel)
```
    Description copied from class: ConverterRule
    
    Converts a relational expression to the target trait(s) of this rule.
    Returns null if conversion is not possible.
    
    Specified by:
    
    convert in class ConverterRule
  - convert
```
public RelNode convert(Join join,
                       boolean convertInputTraits)
```
    Converts a Join into a JdbcJoin.
    
    Parameters:
    
    join - Join operator to convert
    
    convertInputTraits - Whether to convert input to join's JDBC convention
    
    Returns:
    
    A new JdbcJoin
  - canJoinOnCondition
```
private boolean canJoinOnCondition(RexNode node)
```
    Returns whether a condition is supported by JdbcRules.JdbcJoin.
    Corresponds to the capabilities of SqlImplementor.convertConditionToSqlNode(org.apache.calcite.rex.RexNode, org.apache.calcite.rel.rel2sql.SqlImplementor.Context, org.apache.calcite.rel.rel2sql.SqlImplementor.Context, int).
    
    Parameters:
    
    node - Condition
    
    Returns:
    
    Whether condition is supported